Revolving self-cleaning screen.



L. T. GROOTENHUIS.

REVOLVING SELF CLEANING SCREEN. APPLICATION FILED $33.15. 1910.

969,364. Patented Sept. 6, 1910.

LEWIS T. GROOTENI-IUIS, OF BIGTIMBER, MONTANA.

REVOLVING SELF-CLEANING SCREEN.

Specification of Letters Patent.

Patented Sept. 6, 1910.

Application filed February 15, 1910. Serial No. 544,064.

To all whom it may concern:

Be it known that I, LEwIs T. GRoornN- HUIS, a citizen of the UnitedStates of America, residing at Bigtimber, in the county of Sweet- Grassand State of Montana, have invented certain new and useful Improvementsin Revolving Self-Cleaning Screens, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to screens for sluiceways, irrigation ditches andthe like wherein it is desirable to have the water supply screened toremove leaves, twigs and the like therefrom, and the principal object ofthe same is to provide the screen with means whereby the leaves and thelike that contact therewith are automatically removed from the screen.

In carrying out the object of the invention generally stated above itwill be understood, of course, that the essential features thereof, arenecessarily susceptible of changes in details and structuralarrangements, one preferred and practical embodiment of which isshown'in the accompanying drawings, wherein Figure 1 is a centralvertical sectional view of the intake of a sluiceway, showing theimproved self cleaner in operative position thereon. Fig. 2 is a topplan view of the improved screen. Fig. 3 is a horizontal sectional viewtaken on the line 33, Fig. 1. Fig. 4 is a fragmentary View in elevationof the screening cylinder showing one of the pendent vanes carriedthereby.

Referring to said drawings by numerals, 1 designates a box at the intakeend of a sluiceway 2, said box having an opening 3 in its top that isprovided with an upstanding flange collar 4. The bottom 5 of said boxcarries a central socket 6 on its inner surface which is threaded forthe reception of the threaded end of a vertical shaft 7 that extendsthrough and beyond the opening 3 and has its upper portion incased in asleeve 8. Said sleeve 8 is rotatable on shaft 7 and is provided with acollar 9 to which the oppositely projecting supporting arms 10 areattached. The said arms 10 span a central opening 11 in the bottom 12 ofa screening cylinder 13 whose sides are of meshed wire and whose" top 14is of sheet metal. The opening 11 is provided with a pendent flange 15that projects into the flange collar 1 of box 1, and said flange 15 isprovided with a plurality of downwardly curved pendent vanes 16 the topof which are arranged in radiating relation to sleeve 8, the lowerportions of said vanes being in spaced. overlapping relation as is shownin Fig. 3. Brace bars 17 are interposed be tween the top 141: and bottom12 of the cylinder 13 for holding the same in spaced relation. The outersurface of the top let of cylinder 13 is provided with a plurality ofbuckets 18, said buckets being arranged in radiating relation and eachhaving a flange 19 by means of which the buckets are riveted orotherwise rigidly attached to the top 14. Said buckets are of concavedformation and taper outwardly and upwardly, the outer ends projectingbeyond the periphery of the cylinder 13, said outer ends being enlarged.

In operation, assuming the apparatus shown in Fig. 1 to be located in aflowing stream, it will be seen that some of the water will pass intothe cylinder 13 and pass through opening 11 of the bottom 12 andstriking against pendent vanes 16 will impart a rotary movement tocylinder 13. Similarly the force of the flowing water will contact withbuckets 18 with sufiicient pres sure to rotate cylinder 1.3, the foreignmatter caught by the buckets which face the flowing water beingobviously released when they are rotated to an opposite position, and asthe cylinder is being constantly rotated, it will be seen that saidcylinder also releases all foreign matter that its sides catch whenfacing upstream.

It will therefore be seen that the present invention provides meanswhereby a constant rotation of the screening cylinder is assured throughthe employment of the upper buckets which rotate the cylinder by theforce of the flowing stream, such rotation being assisted by the pendentvanes 16 to which rotation is imparted by means of the screened waterthat is delivered to the intake of the sluice, irrigation ditch, or thelike. The vanes 16 are each provided with a right angularly projectingattaching lug 16 which projects at one upper corner thereof, and whichis fastened to the inner surface of collar 15 by the bolts, rivets, orthe like. Preferably said lugs are integral with the vanes.

WVhat I claim as my invention is 1. A device of the character describedcomprising a stationary shaft, a screening cylinder rotatable thereon,buckets arranged in radiating relation on the top of said cylinder andadapted to rotate said cylinder, and pendent vanes carried by the bottomof said cylinder and adapted to receive rotary movement from the forceof the water that passes through said cylinder.

2. A device of the character described comprising a shaft, a screeningcylinder rotatable thereon and provided with an opening in its bottom,buckets on the top of said cylinder for imparting rotation thereto, andvanes projecting from the edge of the opening in the bottom of saidcylinder and receiving rotary power from the water that passes throughsaid opening.

8. A screening device for the intake of water ways comprising a cylinderhaving wire mesh sides, a closed top, and a bottom provided with acentral opening, a shaft upon which said cylinder is rotatably mounted,means carried bythe top of said cylinder and receiving rotary power fromthe water that flows over the same, and means projecting from theopening in the bottom of said cylinder which receives rotary power fromthe water that passes through said cylinder.

4. A screening device comprising a cylinder having an opening in itsbottom, a support upon which said cylinder is rotatably mounted, bucketscarried by the outer sur face of the top of said cylinder, and vanesdepending from the opening in the bottom of said cylinder.

5. A self cleaning screen comprising a rotatably mounted screeningcylinder adapted to be submerged in flowing streams, buckets carried bythe top of said cylinder and receiving rotary force from the flowingstream and means projecting from the bottom of said cylinder whichreceive rotary force from the water that flows through said screen.

6. A screening device comprising a cylinder having a sheet metal top, abottom provided with a central opening and a wire mesh body, a supportupon which said cylinder is rotatably mounted, a collar depending fromthe edge of the opening in the bottom of the cylinder, and a plurahty ofvanes depending from said collar and arranged in spaced overlappingrelation.

7. In a device of the character described the combination with an intakebox of a water way provided with an opening in its top, said openingbeing equipped with an upstanding collar, of a shaft stationary in saidbox and projecting through the open top thereof, a screening cylinderrotatably mounted on said shaft and provided with an opening in itsbottom for delivering to said box, a collar carried by said bottom andsurrounding the opening therein, said collar being fitted to theupstanding flange of said box, and means for rotating said cylinder.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

LEVIS T. GROOTENHUIS. lVitnesses HARRY C. ALLEN, BERNARD J.KLmNIIRssnLINK.

